body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}

.book-detail {
    max-width: 800px;
    margin: 40px auto;
    padding: 20px;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

h1, h2, h3 {
    color: #333;
}

h1 {
    font-size: 2.5em;
}

h2 {
    font-size: 1.5em;
    margin-bottom: 10px;
}

h3 {
    font-size: 1.2em;
    margin-top: 20px;
}

p {
    margin: 0 0 10px;
}

ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

li {
    margin-bottom: 5px;
}
